Hydrogen getter composition

Abstract

The present invention relates to a composition capable of hydrogen sorption in a closed container at low pressure, comprising an unsaturated organic substance and a hydrogenation catalyst. Said unsaturated organic substance is a compound having general formula A or A′, or a dimer or polymer thereof, or a copolymer wherein one of the structural units has the general formula A or A′: wherein R 1 , R 2 and R 3 are hydrogen or hydrocarbon moieties optionally comprising one or more heteroatoms, at least one among R 1 , R 2 and R 3 being chosen in the group of alkenyl, alkynyl, arylalkenyl and arylalkynyl moieties, optionally comprising one or more heteroatoms.

We claim:  
     
       1. An unsaturated organic substance having formula:                    
     
     
       2. A process for the synthesis of the organic substance according to  claim 1 , characterized in that 2,4,6-trichloro-1,3,5-triazine is reacted with three equivalents of an alkaline metal cinnamate. 
     
     
       3. A hydrogen getter composition comprising the unsaturated organic substance according to  claim 1  and a hydrogenation catalyst. 
     
     
       4. The hydrogen getter composition according to  claim 3 , wherein the hydrogenation catalyst is selected from the group consisting of metals of Group VIII of the periodic table, salts and complexes thereof. 
     
     
       5. The hydrogen getter composition according to  claim 4 , wherein the hydrogenation catalyst is palladium supported on alumina or carbon. 
     
     
       6. The hydrogen getter composition according to  claim 5 , wherein palladium is present in an amount of 0.1% to 10% by weight of the unsaturated organic substance.